The Note G#/Ab

G#/Ab as a musical pitch: its frequency, spellings, and the harmony built on top of it.

G#/Ab is most commonly written as Ab in key signatures. Ab major has four flats and a warm, mellow tonality that makes it a favorite in romantic ballads, R&B, and soul music. Its reference octave pitch is 415.3 Hz (MIDI note 68). The major triad on G# is G#/Ab Major (Ab – C – Eb), and the minor triad is G#/Ab Minor (G# – B – D#).